Moving Partitions in Ubuntu

Hey all,

I have an interesting problem. A while back, I made my old laptop (Thinkpad Z60t for those interested) into a Ubuntu box for my wife to keep in the kitchen and look up recipes and what not. At the time, I simply made a secondary partition in the latter ~15GB of space on the disk drive and left windows in the preceding space. As time went on, however, I found that I used Windows less and less.

Anyway, long story short, I would like to upgrade Ubuntu to 11.04, but I can't because there's not enough space on the Linux partition right now to do so. I have already moved all the stuff from the Windows partition with the intention of blowing it away (like I said, I don't use Windows on that machine any more) and moving the current Ubuntu partition to the head of the disk (giving it all the space), but I don't know the best way to do this.

Can anyone help me? I would like the most no-nonsense (least-nonsense?) way of doing this. I am computer savvy, and am comfortable with CLI, but I'm not a Linux Guru (though I have worked with it in the past). I'm hoping to avoid the Google/forum-scraping to find a solution and get some pointers from someone who is more familiar with the platform than I am. Any help is much appreciated. 8^D